Hydraulic shock absorber



S. LAFLEUR HYDRAULIC SHOCK ABSORBER July 5,` 1932.

F'ileadv Nov. 19, 1928 Patented /July v5, 1932 BINAI LAFLEUE, F DETROIT, MICHIGAN HYDRAULIC SHOCK .ABSORBER Application led November 19, 1228. Serial No., 320,265.

My invention relates to a new and useful improvement in an hydraulic shock absorber adapted for use on vehicles.

lt is an object of the present invention to provide a shock absorber which will serve toA stabilize the vehicle and distribute the shock transmitted at the vehicle when passing over rough. places.

Another object of the invention is the prol@ vision in a shock absorber of an hydraulically controlled means for resisting relative displacement of various parts of the vehicle and restoring them quickly to normal position when displaced.

Another object of the invention is the provision in a shock absorber system of this class of a master cylinder for controlling the operation. v

Other objects Will appear hereinafter.

The invention consists in the combination and arrangement of parts hereinafter described and claimed. l

The invention will be best understood from a reference to the accompanying drawing which forms a part of this specification and in which, Y

Fig. 1 is a perspective view of the invention applied.

Fig. 2 is a sectional view in fragment of the invention. t

ln the drawing l have illustrated the invention operated hydraulically but from the description it will also appear that the invention may be pneumatically operated if desired. The invention is illustrated as applied to a vehicle having a chassis comprising side rails 7 and 8 to which are attached springs 9, 10 and 11, and 12 cooperating with the axles 13 and 14, for supporting s@ Vthe chassis frame. A piston rod 15 is connected to the chassis rail 7 or 8, as the case may be, adjacent the forward end of the vehicle and extends into a cylinder 16 formed on which are spaced bolts 17 and 18 cooperatn ing With the cross bar 19 for securing the piston on the axle 1d. The mounting and structure of the device at opposite sides of the chassis frame is the same so that a description of one side will suffice for both. The pipe 20 serves to connect the cylinder 16 in communication with the master cylinder 21 which is mounted on the chassis rail 7 or 8, as the case may be. .Ai piston 22 is mounted in the cylinder 21 and normally pressed by the spring23 against the fluid 24 which fills the system. A cap 25 is provided ywith a. guide 26 about which is positioned, in embracing rela-- tion, the spring 23 and in which engages the guide rod 27 of the piston 22. A check valve having a barrel 28 connects with the pipe 29 and by the pipe 30 with the cylinder 31, which is provided with the yoke arms 32 which embrace the axle 13 and held in position by the cap 34. A piston 35 is slidably mounted in the cylinder 31 and connected to a piston rod 36 which connects to the bight of the U-bolt 37 which is connected to the chassis rail 8 or 7, as the case may be. It will be noted that the cylinder 16 is diagonally opposite to the cylinder 31 with which it cooperates so that if a displacementof one corner of the vehicleis edected, the shock is distributed to the diagonally opposite corner and a corresponding displacement edected to overcome the undue displacement.

' With a system such as described installed on a vehicle, a shock transmitted to any corner of the vehicle is resisted by the duid in the system and distributed across the chassis of the vehicle to the diagonally o posite side.

in the cylinder 28 is ai svvingab y mounted check member 38 having bleed openings 39 'formed therein so that the shock from the forward corner is also taken up in the master cylinder 21 which serves to maintain the Huid pressure in the cylinder at the proper pressurge at all times. y While l have illustrated and described the preferred form of my invention, l do not Wish to limit myself to the precise details of structure shown but desire to avail myself of: such variations and modifications as come Within the scope of the appended claims.

Having thus described my invention what I claim as new and desire to secure hy Letters Patent is:

1. shock absorber of the class described adapted for use with avehicle havingachassis and axles extending transversely thereofat opposite ends of the chassis comprising: a

plurality of cylinders, each mounted on one of said axles on the end thereof; a piston in each of said cylinders; a piston rod connected to each of said pistons; means for connecting said iston rod to said chassis, the piston rods at diagonally opposite sides of said chassis projecting oppositely outwardly from said cylinders; and means for communicating the upper side of one of said cylinders with the lower side of the lower diagonally opposite cylinder.

2. A shock absorber of the class described adapted for use with a vehicle having a chas- Sis and axles extending transversely thereof at opposite ends of the chassis comprising: a plurality of cylinders, each mounted on one of said axles on the end thereof; a piston in each of said cylinders; a piston rod connected to each of said pistons; means for connecting said piston rod to said chassis.3 'the piston rods at diagonally opposite sides o said chassis projecting oppositely outwardly from said cyls inders; means-or communicating thenpper side of one of said cylinders with the lower side of the lower diagonally opposite cylim der; an intermediary cylinder connected te said chassis; a piston mounted in said intere mediary cylinder; and means for the interior of said cylinder wir'li conn necting means. t

3. shock absorber of the class described adapted :tor use with a Vehicle having a elias sis and axles extending transversely thereof at opposite ends of' the chassis comprising:

plurality ci cylinders, each mounted on one of said axles on the end thereof; pist@ each of said cylinders; a piston rod ed to each oi? said pistons; means for c 'L ing said piston rodto said chassis; the rods at diagonally opposite sides of sL 4 l i sis projecting oppositely outwardly cylinders; means for communicating per side of one of said cylinders lower side of the lower diagonally o cylinder; an intermediary cylinder to said chassis; a piston mounted sai termediary cylinder; means 'for connecng the interior of said cylinder with conf2 necting mea-ns; and a check vaiye in said con necting means for retarding the flow of fluid therethrough in one direction In testimony whereof il have signed the foregoing specii'icatione SINA LAFLEUR 

